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Proceedings Article

A survey to control uncertainties by comprehensive monitoring of load-carrying structures

[+] Author Affiliations
Jan F. Koenen

Technische Univ. Darmstadt (Germany)

Roland Platz

Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit (Germany)

Holger Hanselka

Technische Univ. Darmstadt (Germany) and Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit (Germany)

Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 76471R (March 31, 2010); doi:10.1117/12.847303
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From Conference Volume 7647

  • Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010
  • Masayoshi Tomizuka
  • San Diego, California, USA | March 07, 2010

abstract

This paper gives a general view on some aspects of the influence of uncertainty in model-based monitoring of loadcarrying structures. The advantages and relevance of monitoring for the prediction of reliability will be clarified and the difference between uncertainty and reliability is discussed. Solving inverse Problems is a particular challenge in monitoring systems. Therefore, different categories of inverse problems are discussed. A generally valid extended difference equation, which describes the transfer behavior of the structure, will be derived as the basis for digital signal processing of model-based monitoring. This equation also considers changes in the structures dynamic properties, e.g due to damage or temperature. With this equation, the influence of uncertainty due to measurement noise to the functionability of monitoring is discussed and some possibilities are shown to control this uncertainty when determining ideal sensor-positions for monitoring.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Jan F. Koenen ; Roland Platz and Holger Hanselka
"A survey to control uncertainties by comprehensive monitoring of load-carrying structures", Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 76471R (March 31, 2010); doi:10.1117/12.847303; http://dx.doi.org/10.1117/12.847303


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